mconnect 1 user commands djbwares mconnect connect to a line-protocol server on a remote host. mconnect hostport mconnect uses tcpclient1 to connect to TCP port port on host, and then runs mconnect-io1. Its default use is to enable UNIX tools to have a conversation with a network SMTP server. If port is not supplied, the default is 25. If host is not supplied, the default is the local host. tcpcat1 a unidirectional straight pass-through client mconnect was originally part of Daniel J. Bernstein's ucspi-tcp toolset in 1999. Original code and documentation by Daniel J. Bernstein. Documentation modernizations by Jonathan de Boyne Pollard.